Many of us have enjoyed spectacular video of rocket launches from the rocket's point of view, with the launch pad receding rapidly and strap-on boosters falling away as the black sky of space shows up around Earth's curve. The "RocketCam" videos are a staple on YouTube, but they have a value that far exceeds entertainment. In the high-stakes spaceflight business, video shots of rockets and other space hardware in action give engineers a much better view of system performance than even the most detailed numeric telemetry.
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